Subject
- Forest policy -- United States -- Bibliography2
- Forest reserves -- United States -- Bibliography2
- Forests and forestry -- Northwest, Pacific2
- Forests and forestry -- United States -- Bibliography2
- Insects -- Northwest, Pacific2
- United States. Forest Service -- Bibliography2
- United States. Forest Service. Pacific Northwest Region2
- United States. Forest Service. Pacific Northwest Region. Thirty Year Club2
- Agriculture -- Columbia River Watershed -- Periodicals1
- Agriculture -- Columbia River Watershed -- Statistics -- Periodicals1
- Agriculture -- Research -- Oregon -- History1
- Aphididae -- Classification1
- Astronomers -- United States1
- Astronomy -- Study and teaching -- United States1
- Barley -- Oregon1
- Beef cattle -- Feeding and feeds1
- Beef cattle -- Nutrition -- Requirements1
- Beef cattle -- Reproduction1
- Beef cattle -- Wintering -- Great Basin1
- Beetles -- Northwest, Pacific1